The City will begin the hydraulic dredging with $6 million of FEMA money left over from Hurricane Harvey debris removal funds. Mechanical dredging takes longer, but can start immediately. Hydraulic dredging takes less time once started, but the prep can take months. Then they ferry the barges to the placement area where trucks transport the sediment to its final location. With mechanical dredging, they scoop it out of the river and dump it on barges. With hydraulic dredging, contractors continuously pump sediment from the river to a placement area onshore via long pipelines. Mechanical dredging differs from hydraulic dredging. The City hired DRC Emergency Services, LLC (DRC) under an existing contract to begin mechanical dredging of the mouth bar “this week,” according to Houston Mayor Pro Tem Dave Martin. Mouth Bar of the San Jacinto West Fork looking upstream. The area is commonly known as the “mouth bar.” See below. Specifically, that means the large silt deposit at the confluence of the West Fork of the San Jacinto River and Lake Houston. ![]() On December 30, 2019, the City of Houston issued a Notice To Proceed (NTP) for debris removal services.
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